/* Legal pages. Geist throughout, one column, no 01-rail: that layout is
   what every docs-legal page copied, including T3's. Chapters sit in a
   strip under the bar. /info/moderation/ reads this file too. */

:root {
  --bg: #141414;
  --sunken: #1a1a1a;
  --raised: #1f1f1f;
  --ink: rgba(255, 255, 255, 0.9);
  --dim: rgba(255, 255, 255, 0.55);
  --faint: rgba(255, 255, 255, 0.34);
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.14);
  --accent: #49b0ff;
  --accent-soft: rgba(73, 176, 255, 0.15);
  --ring: rgba(255, 255, 255, 0.75);
  --ring-soft: rgba(255, 255, 255, 0.14);
  --danger: #ff7573;
  --danger-soft: rgba(255, 117, 115, 0.12);
  --warn: #e0aa6b;
  --primary: rgba(255, 255, 255, 0.92);
  --primary-ink: #141414;
  --r: 12px;
  --r-sm: 8px;
  --lift-1: 0 1px 2px rgba(0, 0, 0, 0.35);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --quick: 0.13s;
  --bar-h: 3rem;
  --toc-h: 0px;
}

html {
  color-scheme: dark;
  scroll-padding-top: calc(var(--bar-h) + var(--toc-h) + 0.75rem);
}

@media (max-width: 720px) {
  :root { --bar-h: 4.85rem; }
}

* { box-sizing: border-box; }

/* Author display rules beat the UA [hidden] { display: none }. */
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  padding-top: var(--bar-h);
  color: var(--ink);
  background: var(--bg);
  font-family: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Noto Sans", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.67;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
}

/* ----- bar -----

   Three columns: brand, the page links, language or account. On a narrow
   screen the links drop under the brand so the language switch stays on the
   first row instead of floating in a hole next to the links. */

.bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 0.55rem;
  row-gap: 0;
  padding: 0.3rem 1.15rem;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.bar a {
  color: var(--ink);
  text-decoration: none;
}

.bar > a:first-of-type {
  grid-column: 1;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 0.25rem 0;
}

.bar > a:first-of-type:hover,
.bar > a:first-of-type:focus-visible {
  color: var(--accent);
}

.bar nav {
  display: flex;
  gap: 0.15rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.bar nav:not(.langs) { grid-column: 2; min-width: 0; }

.bar nav a {
  padding: 0.22rem 0.45rem;
  border-radius: 6px;
  color: var(--dim);
  font-weight: 500;
  background: transparent;
  border: 1px solid transparent;
}

.bar nav a:hover,
.bar nav a:focus-visible {
  color: var(--ink);
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}

.bar nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
  background: color-mix(in srgb, var(--ink) 6%, transparent);
  border-color: transparent;
  box-shadow: none;
}

.bar .langs,
.bar .who {
  grid-column: 3;
  margin-left: 0;
  justify-self: end;
}

.bar .langs a {
  min-width: 0;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 720px) {
  .bar { grid-template-columns: auto 1fr; }
  .bar nav:not(.langs) {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  .bar .langs,
  .bar .who {
    grid-column: 2;
    grid-row: 1;
  }
}

.bar a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* ----- page ----- */

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.15rem 1.15rem 3rem;
}

h1 {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.4rem;
}

.lead {
  color: var(--dim);
  margin: 0 0 1.1rem;
  font-size: 1.02rem;
}

h2 {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 1.35rem 0 0.4rem;
}

/* Long notices: one column. Chapter names sit in a strip under the bar. */
main.page {
  max-width: 42rem;
  margin: 0 auto;
  display: block;
  padding: 2rem 1.25rem 5rem;
}

.copy { min-width: 0; }

.copy > h1 {
  font-size: 2.35rem;
  font-weight: 600;
  letter-spacing: -0.038em;
  margin-bottom: 0.55rem;
}

.copy > .lead { margin-bottom: 1.15rem; max-width: 36rem; }

.copy > .facts { margin-bottom: 2.2rem; }

.copy section {
  margin: 0;
  padding: 1.85rem 0 0.35rem;
}

.copy section + section { border-top: 1px solid var(--line); }

.copy section:last-child {
  min-height: calc(100svh - var(--bar-h) - var(--toc-h) - 3.5rem);
  padding-bottom: 2rem;
}

.copy h3 {
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 1.05rem 0 0.35rem;
}

.toc:empty { display: none; }

.copy h2 {
  display: block;
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -0.028em;
  text-transform: none;
  color: var(--ink);
  margin: 0 0 0.7rem;
  line-height: 1.25;
}

.toc {
  position: sticky;
  top: var(--bar-h);
  z-index: 35;
  padding: 0.55rem 1.15rem 0.6rem;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.toc ol {
  list-style: none;
  display: flex;
  flex-wrap: nowrap;
  gap: 1.15rem;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.toc ol::-webkit-scrollbar { height: 0; }

.toc a {
  flex: none;
  white-space: nowrap;
  color: var(--faint);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.35;
  padding: 0.28rem 0 0.18rem;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--ink);
}

.toc a[aria-current="location"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.facts {
  display: grid;
  grid-template-columns: minmax(6.5rem, 11rem) minmax(0, 1fr);
  column-gap: 1.1rem;
  row-gap: 0;
  margin: 0 0 0.9rem;
  padding: 0.15rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.facts > div { display: contents; }

.facts dt {
  margin: 0;
  padding: 0.42rem 0;
  color: var(--faint);
  font-family: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.facts dd {
  margin: 0;
  padding: 0.42rem 0;
}

.facts dt,
.facts dd {
  border-bottom: 1px solid var(--line);
}

.facts > div:last-child dt,
.facts > div:last-child dd { border-bottom: 0; }

@media (max-width: 860px) {
  .facts {
    grid-template-columns: minmax(4.5rem, 7.2rem) minmax(0, 1fr);
  }
}

p { margin: 0 0 0.55rem; }
li { margin: 0 0 0.22rem; }

ul { padding-left: 1.2rem; }

main a {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent);
  text-underline-offset: 0.15em;
}

main a:hover,
main a:focus-visible {
  text-decoration-color: var(--accent);
}

code {
  font-family: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--sunken);
  border-radius: 4px;
  padding: 0.08em 0.35em;
}

/* ----- forms ----- */

form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

#who {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

#who.hidden { display: none; }

#who .note { margin: 0; }

label {
  display: block;
  margin: 0;
  font-weight: 550;
  color: var(--ink);
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="search"],
textarea,
select {
  display: block;
  width: 100%;
  margin-top: 0.3rem;
  padding: 0.5rem 0.7rem;
  font: inherit;
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: calc(var(--r-sm) - 2px);
  box-shadow: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--faint);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--line-strong);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px var(--ring-soft);
}

textarea { min-height: 6rem; resize: vertical; }

.check {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-weight: 400;
  padding: 0.45rem 0;
  background: none;
  border: 0;
}

/* A run of ticks is one list: padding lives inside the row, not as a gap
   between cards. */
form:has(> .check + .check) { gap: 0; }
form:has(> .check + .check) > .check + button { margin-top: 0.7rem; }

.check input {
  margin-top: 0.28rem;
  flex: none;
  accent-color: var(--accent);
}

.check a { font-weight: 500; }

button, .btn {
  appearance: none;
  font: inherit;
  font-weight: 550;
  padding: 0.75rem 1.2rem;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--primary);
  color: var(--primary-ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  transition: background var(--quick) var(--ease), transform var(--quick) var(--ease);
}

button:hover, .btn:hover,
button:focus-visible, .btn:focus-visible {
  background: color-mix(in srgb, var(--primary) 88%, #fff);
  color: var(--primary-ink);
}

button:active, .btn:active { transform: scale(0.98); }

a.btn { color: var(--primary-ink); }

button, .btn, .ok {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.045), var(--lift-1);
}

.err {
  display: inline-block;
  width: fit-content;
  max-width: 100%;
  color: var(--danger);
  background: var(--danger-soft);
  border: 1px solid color-mix(in srgb, var(--danger) 28%, transparent);
  border-radius: 6px;
  padding: 0.18rem 0.5rem;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.35;
  font-weight: 500;
}

main > .err { margin: 0 0 0.45rem; }

form > .check + button { margin-top: 0.15rem; }

.ok {
  padding: 1.1rem 1.2rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.045), var(--lift-1);
}

.ok p:last-child { margin-bottom: 0; }

.hidden { display: none; }

.note {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--dim);
}

@media (prefers-reduced-motion: reduce) {
  button, .btn, .toc a { transition: none; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

@media (prefers-reduced-transparency: reduce) {
  :root {
    --line: rgba(255, 255, 255, 0.22);
    --line-strong: rgba(255, 255, 255, 0.35);
  }
  .bar,
  .toc {
    background: var(--bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}